MAX11122ATI+ datasheet(35/40 Pages) MAXIM

Part #	MAX11122ATI+

Description	1Msps, Low-Power, Serial 12-/10-/8-Bit, 4-/8-/16-Channel ADCs

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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35 / 40 page

35

MAX11120–MAX11128

1Msps, Low-Power, Serial 12-/10-/8-Bit,

4-/8-/16-Channel ADCs

Figure 11. ADC Programming Sequence

SELECT REFERENCE

UNIPOLAR

RANGE SELECT

EXTERNAL SINGLE-ENDED

EXTERNAL DIFFERENTIAL

1

0

SINGLE-ENDED

OR DIFFERENTIAL

SELECT ADC

CONFIGURATION REGISTER

SET REFSEL BIT TO 0

SELECT ADC

CONFIGURATION REGISTER

SET REFSEL BIT TO 1

FIGURE OUT NUMBER

OF CHANNELS TO USE (N)

FOR EACH ADC CHANNEL

SINGLE-ENDED

PSEUDO-

DIFFERENTIAL

FULLY-

DIFFERENTIAL

SINGLE-ENDED

PSEUDO-

DIFFERENTIAL

UNIPOLAR OR

BIPOLAR

PSEUDO-DIFFERENTIAL

SINGLE-ENDED

BIPOLAR

SE, PsD/FD

SELECT UNIPOLAR AND

REGISTER SET BIT PDIFF_COM

TO 1 FOR PSEUDO-

DIFFERENTIAL SELECTION

SELECT UNIPOLAR AND

BIPOLAR REGISTER SET PER

CHANNEL UCH{X}/{X+1}

AND BCH{X}/{X+1} TO 0 FOR

SINGLE-ENDED SELECTION

SELECT BIPOLAR REGISTER

SET PER CHANNEL

BCH{X}/{X+1} TO 1

FOR BIPOLAR FULLY

DIFFERENTIAL

SELECT UNIPOLAR

REGISTER SET PER

CHANNEL UCH{X}/{X+1}

TO 1 FOR UNIPOLAR

SELECT RANGE REGISTER SET PER CHANNEL

PAIR RANGE{X}/{X+1} TO 1 QVREF+

SELECT RANGE REGISTER SET PER CHANNEL

PAIR RANGE{X}/{X+1} TO 0 QVREF+/2

NEXT CHANNEL

SEE FIGURE 12

FOR EACH ADC CHANNEL

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MAX11122ATI+ Datasheet(PDF) 35 Page - Maxim Integrated Products

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